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Radda [10]
2 years ago
8

Which of the following is an example of how the fossil record is evidence for evolution?

Biology
1 answer:
Aneli [31]2 years ago
7 0

Answer:Fossils are all throughout different rock layers. The oldest fossils are on top and the newest are at the bottom.

Explanation: there is a rich fossil record that shows the evolutionary transitions from horse ancestors to modern horses that document intermediate forms and a gradual adaptation o changing ecosystems.

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What do you think would have the greatest effect on the body—a harmful mutation in a pluripotent embryonic stem cell
spin [16.1K]

Answer:

This question lacks options, the complete question is: What do you think would have the greatest effect on the body—a harmful mutation in a pluripotent embryonic stem cell, or a harmful mutation in an adult multipotent stem cell?The correct answer is a harmful mutation in a pluripotent embryonic stem cell.

Explanation:

Pluripotent Stem Cells can self-renew and differentiate into any of the three germ layers, which are: the ectoderm, the endoderm and the mesoderm. These three germ layers subsequently differentiate to form all the tissues and organs within a human being. If during embryonic development, genetic mutations - alterations in genes - occur in the embryonic stem cell, they pass to daughter cells as a consequence of cell division, and an individual is generated whose cells differ at the genetic level. Multipotent stem cells are organospecific cells, that is, they can give rise to any type of cells but from a specific organ (a lung, a kidney or the brain). Their differentiation ends the moment they specialize and become a cell with a specific function within a specific tissue or organ. If there were a mutation in these cells, it would damage a specific designed tissue or organ.

3 0
3 years ago
Which of these unicellular organisms has no definite shape?
AlekseyPX

Answer:

Amoeba

Explanation:

7 0
2 years ago
Read 2 more answers
Aerobic respiration happens in what cellular organelle?
kolbaska11 [484]
Aerobic respiration happens in the mitochondrion of eukaryotic cells.

Anaerobic respiration does not use oxygen gas and happens in one process after glycolysis called Fermentation.

The process used to make beer would be a kind of fermentation, Alcohol fermentation, I believe.
4 0
3 years ago
What are some steps that scientists can take in designing an experiment to avoid false negatives?
Alchen [17]
False negative is a condition when you got a negative result for a specimen which was positive. To prevent false negative occur, first you need to use golden standard test or a test with high specificity. You can do multiple tests to ensure the specimen is negative and using a positive control to make sure the reagent is still working fine. 
7 0
3 years ago
The symmetry exhibited by adult echinoderms is ______________.
UNO [17]
The answer is radial
6 0
3 years ago
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